Active breakdown circuit for increasing the operating range of c

Details Active breakdown circuit for increasing the operating range of c Active breakdown circuit for increasing the operating range of c

1974-08-12

1976-02-24

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

307296, 323 16, 323 22T, 330 22, 330 40, H03F 310

Patent

active

039406830

ABSTRACT:
An active circuit and method for increasing the operating range of circuit elements of the type connected between a power supply and a circuit element, the active circuit including a transistor having a base, emitter and a collector, the transistor having a breakdown voltage. The transistor is biased to provide a current path through it to the circuit element and to develop a voltage thereacross. The transistor and its biasing in combination are operative when the supply voltage exceeds a predetermined level to cause the transistor to breakdown. The breakdown voltage across the transistor opposes the supply voltage so that the operating range is increased and the actual voltage applied to the element does not exceed the breakdown voltage of the element.

REFERENCES:
patent: 3566293 (1971-02-01), Recklinghausen
patent: 3648153 (1972-03-01), Graf
patent: 3660694 (1972-05-01), Lucas
patent: 3835410 (1974-09-01), Wittlinger
patent: 3855541 (1974-12-01), Leidich

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